Recording the new Union operator for annotation to make None Last

[Cheukting]

Recording the new Union operator for annotation to make None Last

• [x] make it work for 2 items only
• [x] make it work for more than 2 items (may involve recursion)
• [x] make it only work with annotations

see task in #22

[Zac-HD]

🎉🎉🎉

I think we'll only want to do this inside annotations, since the | operator might be used in other ways too.

[Cheukting]

🎉🎉🎉

I think we'll only want to do this inside annotations, since the | operator might be used in other ways too.

sure, next step

[Zac-HD]

Looks great! Add a test for arg: int | None | str | float? Once that's handled, I'll merge and make a new release 🚀

[Cheukting]

Looks great! Add a test for arg: int | None | str | float? Once that's handled, I'll merge and make a new release 🚀

I just added the 3 or more version and it works on something like var: bool | None | int | str (see the test file)